diff --git a/src/dcc/Defs.cxxtest b/src/dcc/Defs.cxxtest
new file mode 100644
index 000000000..3dbf403c8
--- /dev/null
+++ b/src/dcc/Defs.cxxtest
@@ -0,0 +1,9 @@
+#include "dcc/Defs.hxx"
+
+#include "utils/test_main.hxx"
+
+
+
+TEST(DccDefs, address_partition_14) {
+// TODO.
+}